caching already calculated prefix context in rules expansion
caching already calculated prefix context in rules expansion

paddymahoney/datascript,borovsky/datascript,piranha/datascript,systemovich/datascript,systemovich/datascript,borovsky/datascript,refset/datascript,piranha/datascript,sonwh98/datascript,alesguzik/datascript,borovsky/datascript,tonsky/datascript,paddymahoney/datascript,sonwh98/datascript,refset/datascript,alesguzik/datascript,tonsky/datascript,alesguzik/datascript,systemovich/datascript,paddymahoney/datascript,refset/datascript,piranha/datascript,dahjelle/datascript,tonsky/datascript,sherbondy/datascript,sonwh98/datascript,sherbondy/datascript,dahjelle/datascript,dahjelle/datascript,sherbondy/datascript,dahjelle/dataquery